Maria Madalena Alves Campos de Sousa Dionísio Andrade

Assistant Professor with Aggregation
Secção de Engenharia Química e Bioquímica
(+351) 212949659

Research Interests

Glass transition and dynamical behaviour in low-molecular weight glass formers and polymers. Nanoconfinement. Physical ageing.
Materials: monomers, liquid crystals, ionic liquids, amorphous and semi-crystalline polymers, soft and hard membranes, pharmaceutical drugs.
Main technique: Dielectric Relaxation Spectroscopy 

Main Publications

M. Dionísio*, A. Fernandes, J. Mano, N. Correia, R. Sousa, “Relaxation studies on PEO/PMMA blends”, Macromolecules, 2000, 33, 1002-1011.
M. T. Viciosa, M. Dionísio*, R. M. Silva, R. L. Reis, J. F. Mano, “Molecular motions in chitosan studied by dielectric relaxation spectroscopy”, Biomacromolecules, 2004 5(5), 2073-2078.
A. R. Brás, M. T. Viciosa, J. C. Dias, C. Rodrigues, M. Dionísio*, “Changes in molecular dynamics upon formation of a polymer dispersed liquid crystal”, Phys. Rev. E, 73 (6): Art. No. 061709 Part 1 JUN (2006)
A. R. Brás, M. Dionísio, H. Huth, Ch. Schick, A. chönhals*, “The origin of glassy dynamics in a liquid crystal studied by broadband dielectric and thermal spectroscopy”, PHYSICAL REVIEW E 75,061708 , 2007.
- A. R. Bras, J. P. Noronha, A. M. M. Antunes, M. M. Cardoso, A. Schoenhals, F. Affouard, M.Dionísio, and N. T. Correia*, "Molecular Motions in Amorphous Ibuprofen As Studied by Broadband Dielectric Spectroscopy", J. Phys. Chem. B, 2008, Vol. 112, 11087-11099
- A. R. Brás, P. Malik, M. Dionísio,*, J. F. Mano, “Influence of Crystallinity in Molecular Motions of
Poly(L-lactic acid) Investigated by Dielectric Relaxation Spectroscopy”, Macromolecules, 2008, 41,6419-6430
M. T. Viciosa, N. T. Correia, M. Salmeron Sanchez, J. L. Gomez Ribelles, M. Dionísio*,“Molecular Dynamics of Ethylene Glycol Dimethacrylate Glass Former: Influence of Different Crystallization Pathways”J. Phys. Chem. B 2009, 113, 14196–14208.
Brás, A. R., Frunza, S.; Guerreiro, L.; Fonseca, I. M.; Corma, A; Frunza, L.; Dionísio, M.;Schönhals*, A. olecular mobility of nematic E7 confined to molecular sieves with a low filling degree.J. Chem. Phys. 2010, 132, 224508-1-224508-12.
A. R. Bras,E. G. Merino,P. D. Neves,I. M. Fonseca,M.Dionísio,A. Schoenhals,N.T. Correia*,J. Chem. Phys. C. 2011, 115, 4616–4623.